EM Waves Flashcards
1
Q
What do EM waves do?
A
Transfer energy from source to observer
eg. Microwave transfers energy from source to food
Sun emits energy to earth
2
Q
Factors of EM waves
A
They are all transverse
They all travel at the same speed in a vacuum
Differences include wavelength and frequency
3
Q
Name the electromagnetic spectrum groups in order of decreasing wavelength and increasing frequency
A
Radio
Microwave
Infrared
Visible
Ultra violet
X-ray
Gamma rays
4
Q
What is the only EM wave that our eyes can detect?
A
Visible light
5
Q
What’s the relationship between wavelength and frequency?
A
As wavelength decreases the frequency increases
6
Q
What’s the relationship between frequency and energy?
A
As frequency increases energy of the wave increases
